Adds a setup check for the memory limit

Signed-off-by: Michael Weimann <mail@michael-weimann.eu>

1 files changed, 47 insertions, 0 deletions

diff --git a/lib/private/MemoryInfo.php b/lib/private/MemoryInfo.php
new file mode 100644
index 00000000000..14865ed682e
--- /dev/null
+++ b/lib/private/MemoryInfo.php
@@ -0,0 +1,47 @@
+<?php
+
+namespace OC;
+
+/**
+ * Helper class that covers memory info.
+ */
+class MemoryInfo {
+	/**
+	 * Returns the php memory limit.
+	 *
+	 * @return int The memory limit in bytes.
+	 */
+	public function getMemoryLimit(): int {
+		$iniValue = trim(ini_get('memory_limit'));
+		if ($iniValue === '-1') {
+			return -1;
+		} else if (is_numeric($iniValue) === true) {
+			return (int)$iniValue;
+		} else {
+			return $this->memoryLimitToBytes($iniValue);
+		}
+	}
+
+	/**
+	 * Converts the ini memory limit to bytes.
+	 *
+	 * @param string $memoryLimit The "memory_limit" ini value
+	 * @return int
+	 */
+	private function memoryLimitToBytes(string $memoryLimit): int {
+		$last = strtolower(substr($memoryLimit, -1));
+		$memoryLimit = (int)substr($memoryLimit, 0, -1);
+
+		// intended fall trough
+		switch($last) {
+			case 'g':
+				$memoryLimit *= 1024;
+			case 'm':
+				$memoryLimit *= 1024;
+			case 'k':
+				$memoryLimit *= 1024;
+		}
+
+		return $memoryLimit;
+	}
+}